CN114690146A - Laser emission structure and laser radar with same - Google Patents

Laser emission structure and laser radar with same Download PDF

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Publication number
CN114690146A
CN114690146A CN202011574919.3A CN202011574919A CN114690146A CN 114690146 A CN114690146 A CN 114690146A CN 202011574919 A CN202011574919 A CN 202011574919A CN 114690146 A CN114690146 A CN 114690146A
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CN
China
Prior art keywords
opening
laser light
laser
optical fiber
emitting
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Pending
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CN202011574919.3A
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Chinese (zh)
Inventor
赵忠尧
刘贯领
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Ruichi Zhiguang Suzhou Technology Co ltd
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Ruichi Zhiguang Suzhou Technology Co ltd
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Application filed by Ruichi Zhiguang Suzhou Technology Co ltd filed Critical Ruichi Zhiguang Suzhou Technology Co ltd
Priority to CN202011574919.3A priority Critical patent/CN114690146A/en
Publication of CN114690146A publication Critical patent/CN114690146A/en
Pending legal-status Critical Current

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
    • G01S7/48—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S17/00
    • G01S7/481—Constructional features, e.g. arrangements of optical elements
    • G01S7/4818—Constructional features, e.g. arrangements of optical elements using optical fibres
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
    • G01S7/48—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S17/00
    • G01S7/481—Constructional features, e.g. arrangements of optical elements
    • G01S7/4811—Constructional features, e.g. arrangements of optical elements common to transmitter and receiver
    • G01S7/4812—Constructional features, e.g. arrangements of optical elements common to transmitter and receiver transmitted and received beams following a coaxial path
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
    • H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
    • H01S3/005—Optical devices external to the laser cavity, specially adapted for lasers, e.g. for homogenisation of the beam or for manipulating laser pulses, e.g. pulse shaping

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Electromagnetism (AREA)
  • Plasma & Fusion (AREA)
  • Optics & Photonics (AREA)
  • Optical Couplings Of Light Guides (AREA)
  • Optical Radar Systems And Details Thereof (AREA)

Abstract

The invention discloses a laser emission structure and a laser radar with the same. A laser emission structure according to an embodiment of the present invention includes: an emitting section capable of emitting laser light; an optical fiber section having one end receiving the laser light emitted from the emitting section and causing the laser light to travel along the optical fiber section; a ferrule disposed at the other end of the optical fiber portion; a fixing portion having a first opening and a second opening; and an integral lens having an incident portion into which the laser light is incident and an exit portion from which the laser light is emitted, wherein the ferrule is inserted into the first opening of the fixing portion, and the integral lens is inserted into the second opening of the fixing portion.

Description

Laser emission structure and laser radar with same
Technical Field
The invention relates to the field of optics, in particular to a laser radar.
Background
The laser radar has the advantages of high precision, strong anti-interference capability, high reaction speed and the like as a radar device, so that the laser radar is suitable for various use environments. The lidar as described above may obtain related information such as a distance, a speed, and the like about a surrounding object by emitting a laser beam to a surrounding three-dimensional space as a probe signal, and causing the laser beam to be reflected as an echo signal and return after being irradiated to the object in the surrounding space, and comparing the received echo signal with the emitted probe signal.
The laser radar as described above includes a transmitting section and a receiving section. The emitting part generates and emits laser beams, and the laser beams which hit surrounding objects and are reflected are received by the receiving part. Since the speed of light is known, the distance of surrounding objects relative to the lidar can be measured by the propagation time of the laser.
In the existing lidar, the transmitting portion and the receiving portion are generally arranged laterally apart, and therefore a blind zone may exist in an area between the transmitting portion and the receiving portion in front of the transmitting portion and the receiving portion. This is a disadvantage when measuring close-range objects with lidar. Therefore, it is desirable to provide a laser radar that can reduce the above-mentioned blind area and is advantageous for miniaturization.
Disclosure of Invention
The invention provides a laser emitting structure beneficial to miniaturization and a laser radar with the same.
A laser emission structure according to an embodiment of the present invention includes: an emitting section capable of emitting laser light; an optical fiber section having one end receiving the laser light emitted from the emitting section and causing the laser light to travel along the optical fiber section; a ferrule inserted into the other end of the optical fiber portion; a fixing portion having a first opening and a second opening; and an integral lens having an incident portion into which the laser light is incident and an exit portion from which the laser light is emitted, wherein the ferrule is inserted into the first opening of the fixing portion, and the integral lens is inserted into the second opening of the fixing portion.
The laser light emitted from the emitting section may be emitted to the outside through the optical fiber section and the integral lens.
The incident portion of the integral lens may have a concave lens shape, and the exit portion of the integral lens may have a convex lens shape, and the integral lens may be inserted into the second opening such that the incident portion faces the inside of the second opening and the exit portion faces the outside of the second opening.
A through portion connecting the first opening and the second opening may be formed in a region between the first opening and the second opening of the fixing portion, and the laser light may enter the integral lens after passing through the through portion from the optical fiber portion.
A diameter of a side of the through portion closest to the first opening may be smaller than a diameter of an innermost side of the first opening.
An outer sidewall of the ferrule may be in contact with an inner sidewall of the first opening.
The optical fiber part may be formed in a curved shape.
The first and second openings may communicate with each other inside the fixing portion.
A laser emission structure according to another embodiment of the present invention includes: an emitting section capable of emitting laser light; an optical fiber section having one end receiving the laser light emitted from the emitting section and causing the laser light to travel along the optical fiber section; a ferrule inserted into the other end of the optical fiber section; an integral lens having an incident portion for allowing laser light to enter and an exit portion for allowing laser light to exit from the integral lens; and a fixing part into which the ferrule is inserted at one side and the integral lens is inserted at the other side.
The laser radar according to an embodiment of the present invention includes: an emitting section capable of emitting laser light; an optical fiber section having one end receiving the laser light emitted from the emitting section and causing the laser light to travel along the optical fiber section; a ferrule inserted into the other end of the optical fiber portion; an integral lens having an incident portion for allowing laser light to enter and an exit portion for allowing laser light to exit from the integral lens; a fixing portion having a first opening and a second opening, the ferrule being inserted into the first opening of the fixing portion, and the integral lens being inserted into the second opening of the fixing portion, so that laser light is emitted from the optical fiber portion to the outside through the integral lens; a receiving unit capable of receiving laser light emitted from the emitting unit and reflected outside the laser radar; and a receiving lens for focusing the laser light reflected outside the laser radar after being emitted from the emitting part, wherein the receiving lens is formed with an insertion part, and the fixing part is inserted into the insertion part of the receiving lens.
With the laser emission structure as described above, the laser emission structure of the laser radar can be simplified, and the optical path alignment process between the emission part and the integral lens can be simplified. Also, the above structure can increase the variety of position choices of the emission portion compared to the case where the light emitted from the emission portion is made to directly enter the integral lens. Also, the lateral space occupied by the laser emitting structure can be reduced.
According to the laser radar of the embodiment of the invention, the laser emitted from the integral lens and the receiving lens can be coaxial, so that the blind area between the emitted laser and the received laser can be reduced. Further, according to an embodiment of the present invention, since the optical fiber part can be directly inserted into the fixing part after being inserted into the ferrule, the lateral length of the connection and fixing structure of the optical fiber part can be reduced compared to a case where a metal ferrule is formed on the outer side of the ferrule. In addition, since the laser is emitted from the emitting portion through the optical fiber portion and then from the integral lens, the length of the laser emitting structure in the longitudinal direction in the coaxial laser radar can be reduced.
The effects of the present invention are not limited to the above-described effects, and those skilled in the art can derive the effects not described above from the following description.
Drawings
Fig. 1 is a sectional view showing a laser emitting structure according to a first embodiment of the present invention.
Fig. 2 is a perspective view showing an integral lens according to a first embodiment of the present invention.
Fig. 3 is a sectional view showing an integrated lens according to a first embodiment of the present invention.
Fig. 4 is a perspective view illustrating a fixing part according to a first embodiment of the present invention.
Fig. 5 is a sectional view showing a fixing part according to a first embodiment of the present invention.
Fig. 6 is a sectional view showing a laser emitting structure according to a second embodiment of the present invention.
Fig. 7 is a schematic diagram illustrating a lidar in accordance with an embodiment of the present invention.
Description of the symbols
100: the optical fiber section 200: ceramic ferrule
300: fixing part 400: integrated lens
500: receiving lens 1000: transmitting part
2000: receiving part
Detailed Description
The technical solutions of the embodiments of the present invention will be described in detail below with reference to the accompanying drawings of the embodiments of the present invention. It is to be understood that the following disclosed embodiments are merely exemplary of the invention, and are not intended to be exhaustive or all exemplary embodiments. All other embodiments, which can be obtained by a person skilled in the art without inventive effort based on the following examples, belong to the scope of protection of the present invention.
Also, in the description of the present invention, the terms "upper", "lower", "left", "right", "front", "rear", and the like indicate orientations or positional relationships based on the drawings, and are simply for convenience of description of the present invention, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and operate, and thus, should not be construed as limiting the present invention.
Hereinafter, a laser emission structure according to a first embodiment of the present invention will be described in detail with reference to fig. 1 to 5.
Fig. 1 is a sectional view showing a laser emitting structure according to a first embodiment of the present invention. Fig. 2 is a perspective view showing an integral lens according to a first embodiment of the present invention. Fig. 3 is a sectional view showing an integrated lens according to a first embodiment of the present invention. Fig. 4 is a perspective view illustrating a fixing part according to a first embodiment of the present invention. Fig. 5 is a sectional view showing a fixing part according to a first embodiment of the present invention.
The laser emitting structure according to the first embodiment of the present invention may be provided to a laser radar, and may emit laser light such that the laser light returns to the laser radar after being reflected by an object outside the laser radar, so that a distance between a surrounding object and the laser radar may be measured by a time of flight (TOF) method.
As shown in FIGS. 1 to 5, the laser emitting structure according to the first embodiment of the present invention may include an emitting part (not shown), an optical fiber part 100, a ferrule 200, a fixing part 300, and an integral lens 400.
The emitting part may be an Edge Emitting Laser (EEL) or a Vertical Cavity Surface Emitting Laser (VCSEL). In which laser light of an Edge Emitting Laser (EEL) is emitted parallel to a substrate and laser light of a Vertical Cavity Surface Emitting Laser (VCSEL) is emitted perpendicular to the substrate. In the present invention, the type of the emitting portion is not particularly limited as long as the emitting portion can emit laser light.
The laser light emitted from the emitting part may be coupled to be incident into one end of the optical fiber part 100. The laser light may be totally reflected within the optical fiber portion 100, move along the optical fiber portion 100, and reach the other end of the optical fiber portion 100. Therefore, the optical fiber part 100 may be bent at a predetermined angle such that the other ends of the emitting part and the optical fiber part 100 are not located on the same straight line. In order to ensure that the laser light can generate total reflection in the optical fiber portion 100, the bending radius of the optical fiber portion 100 is preferably not less than 10 times the diameter of the optical fiber portion 100.
A ferrule 200 may be formed at the other end of the optical fiber portion 100. And, a protective layer for protecting the optical fiber part 100 may be formed at a region between the launching part of the optical fiber part 100 and the ferrule 200.
The ferrule 200 may have a shape that allows the other end of the optical fiber 100 to be inserted therein and to be inserted into a fixing portion 300, which will be described later. For example, the ferrule 200 can be formed in a hollow cylindrical shape. Accordingly, the ferrule 200 can fix the optical fiber part 100 to the fixing part 300.
Wherein the ferrule 200 can be formed from a specialty ceramic. For example, the ferrule 200 can utilize zirconia (ZrO)2) And (4) forming.
The fixing portion 300 may fix the ferrule 200 and an integrated lens 400, which will be described later. That is, as shown in fig. 1, the ferrule 200 may be inserted into one end of the fixing portion 300, and the integral lens 400 may be inserted into the other end of the fixing portion 300.
The shape of the fixing portion 300 may be as shown in fig. 4 to 5. Among them, fig. 4 is a perspective view illustrating a fixing part 300 according to a first embodiment of the present invention, and fig. 5 is a sectional view illustrating the fixing part 300 according to the first embodiment of the present invention.
As shown in fig. 1 and 5, a first opening 310 into which the ferrule 200 can be inserted and a second opening 320 into which the integral lens 400 can be inserted are formed at both sides of the fixing portion 300, respectively. The first opening 310 is formed in a shape into which the ferrule 200 can be inserted. That is, the first opening 310 is preferably sized to be closely coupled to the ferrule 200 (or may be in contact with the ferrule 200 via an adhesive). Also, the fixing part 300 may have predetermined elasticity to facilitate the insertion of the ferrule 200. Accordingly, the ferrule 200 can be secured within the securing portion 300 after the ferrule 200 is inserted into the first opening 310. Thereby fixing the position of the optical fiber part 100 within the ferrule 200.
The second opening 320 of the fixing part 300 may be formed in a shape that can be closely attached to the outer circumference of the integral lens 400. In this regard, the shape of the second opening 320 will be described in detail later.
A penetration portion 330 connecting the first opening 310 and the second opening 320 may be formed in a region between the first opening 310 and the second opening 320 of the fixing portion 300. The through portion 330 is formed between the first opening 310 and the second opening 320 of the fixing portion 300 so that the laser light emitted from the optical fiber portion 100 at the first opening 310 can travel toward the second opening 320.
For this reason, the penetrating portion 330 may be formed in a substantially circular truncated cone shape. The through portion 330 may have a shape in which a diameter gradually increases from a position close to the first opening 310 to a position close to the second opening 320. Further, the diameter of the first opening 310 side of the through part 330 may be formed to be smaller than the diameter of the innermost part of the first opening 310, so that a blocking part may be formed such that the ferrule 200 may closely contact the innermost part of the first opening 310 and cannot pass through the through part 330 when the ferrule 200 is inserted into the first opening 310 of the fixing part 300. Similarly to this, the diameter of the second opening 320 side of the through part 330 may be formed smaller than the diameter of the innermost part of the second opening 320.
After assembling the laser emitting structure according to the first embodiment of the present invention, the laser light emitted from the emitting part may travel along the optical fiber part 100. And, the other end of the optical fiber part 100 is fixed to the innermost side of the first opening 310 by the ferrule 200 as it is inserted into the ferrule 200. Therefore, the laser light may be emitted from the other end of the optical fiber portion 100 to the outside through the through portion 330 into the second opening 320.
An integral lens 400 may be inserted into the second opening 320. The shape of the unitary lens 400 may be as shown in fig. 2 and 3. The integral lens 400 may have an incident portion 410 for allowing laser light to enter and an emitting portion 420 for emitting laser light from the integral lens 400 as shown in fig. 3.
Also, the integral lens 400 may be formed in a shape in which a diameter gradually increases from the incident part 410 to the exit part 420. The inclination of the side surface of the integral lens 400 with respect to the horizontal plane may be similar to the traveling direction of the outermost laser beam in the integral lens 400.
The incident portion 410 may have a concave lens shape. Also, the incident portion 410 may have a negative optical power. Therefore, the incident portion 410 can diverge the laser light emitted from the optical fiber portion 100 and travel inside the integral lens 400. The shape of the incident portion 410 may be appropriately changed according to a desired optical path.
The emission part 420 may have a convex lens shape. Also, the exit part 420 may have positive power. Therefore, the light incident on the incident portion 410 and traveling in the integral lens 400 can be collimated by the emission portion 420 and emitted from the integral lens 400.
Thus, the laser light emitted from the integral lens 400 may have a higher degree of collimation and may have a larger spot than the laser light incident to the integral lens 400.
Further, as shown in fig. 3, a chuck 430 may be formed at a side surface of the integrated lens 400. When the integral lens 400 is inserted into the second opening 320, the clamping platform 430 may be clamped at the clamping portion of the second opening 320 to fix the position of the integral lens 400.
Here, the shape of the second opening 320 will be described in more detail. As shown in fig. 5, the second opening 320 may be formed in a shape corresponding to the integrated lens 400. That is, the second opening 320 may be formed in a shape in which the diameter of the inlet portion is large and the diameter of the position close to the through portion 330 is small. The integral lens 400 may be inserted into the second opening 320 such that the incident portion faces the inside of the second opening and the exit portion faces the outside of the second opening. Also, a snap-in portion may be formed at a position of the fixing portion 300 corresponding to the snap-in stage 430 of the integrated lens 400.
Further, the depth of the second opening 320 may be formed to be greater than the length of the integral lens 400. Accordingly, when the integrated lens 400 is inserted into the second opening 320 of the fixing part 300, as shown in fig. 1, the bottom of the integrated lens 400 may be spaced apart from the innermost side of the second opening 320 by a predetermined distance. The separation distance may be set as appropriate in consideration of a processing error and a desired optical path of the laser light.
In assembling the laser emitting structure according to the first embodiment of the present invention, the emitting part may be fixed to a predetermined position of the laser radar, and then one end of the optical fiber part 100 may be configured to receive the laser light emitted from the emitting part. The other end of the optical fiber portion 100 may be inserted into the ferrule 200. The ferrule 200 can then be inserted into the first opening 310 of the fixation portion 300. Then, the integral lens 400 may be inserted into the second opening 320 of the fixing part 300. Accordingly, the positions of the optical fiber part 100 and the integral lens 400 can be fixed with respect to the fixing part 300. Next, the fixing part 300 may be fixed at a desired position of the laser radar. After the integral lens 400 is inserted into the second opening 320, an insert (as shown in fig. 1) may be disposed above the integral lens 400 to prevent the integral lens 400 from being separated from the second opening 320.
In the above, the laser emission structure according to the first embodiment of the present invention is explained. With the laser emission structure as described above, the laser emission structure of the laser radar can be simplified, and the optical path alignment process between the emission part and the integral lens 400 can be simplified. Also, the above structure can increase the variety of position choices of the emission portion compared to the case where the light emitted from the emission portion is made to directly enter the integral lens. Also, the lateral space occupied by the laser emitting structure can be reduced.
In the above, the laser emission structure according to the first embodiment of the present invention is explained. Next, a laser light emitting structure according to a second embodiment of the present invention will be explained with reference to fig. 6.
Fig. 6 is a sectional view showing a laser emitting structure according to a second embodiment of the present invention.
As shown in fig. 6, the laser emission structure according to the second embodiment is different from the laser emission structure according to the first embodiment in that a blocking part and a penetrating part 330 as in the first embodiment are not formed between a first opening 310 and a second opening 320 of a fixing part 300, but are formed in a shape in which the first opening 310 and the second opening 320 communicate with each other. That is, there is no blocking portion having a reduced inner diameter between the first opening 310 and the second opening 320, and thus a portion of the ferrule 200 can be inserted from the first opening 310 to the inside of the second opening 320.
Therefore, the laser emission structure according to the second embodiment can adjust the distance between the ferrule 200 and the integral lens 400 (i.e., the distance between the other end of the optical fiber part 100 and the incident part 410 of the integral lens 400) by adjusting the degree of insertion of the ferrule 200 into the first opening 310, compared to the laser emission structure according to the first embodiment, and thus can more conveniently adjust the optical path and spot of the laser light.
Fig. 7 is a schematic diagram illustrating a lidar in accordance with an embodiment of the present invention.
Referring to fig. 7, the laser radar according to an embodiment of the present invention may include a transmitting part 1000, a receiving part 2000, an optical fiber part 100, a ferrule 200, a fixing part 300, an integral lens 400, and a receiving lens 500.
The optical fiber part 100, the ferrule 200, the fixing part 300, and the integral lens 400 may be the same as the optical fiber part 100, the ferrule 200, the fixing part 300, and the integral lens 400 of the laser emitting structure described with reference to fig. 1 to 5.
The emitting part 1000 may be an Edge Emitting Laser (EEL) or a Vertical Cavity Surface Emitting Laser (VCSEL). In the present invention, the emitting part 1000 may emit laser light, and the type thereof is not particularly limited.
The receiving unit 2000 may receive laser light emitted from the transmitting unit 1000 and returned to the laser radar after being reflected by an object outside the laser radar.
The receiving unit 2000 may be an Avalanche Photodiode (APD) or a Single Photon Avalanche Diode (SPAD). And, the type of the receiving part 2000 is not limited thereto. The specific type of the receiving part 2000 may be appropriately selected by those skilled in the art within the range of a known photoelectric sensor.
The receiving lens 500 may focus laser light returned by being irradiated to an object outside the laser radar on the receiving part 2000. Accordingly, the receiving lens 500 may be formed in a convex lens form.
An insertion portion into which the fixing portion 300 according to an embodiment of the present invention can be inserted may be formed at the center of the receiving lens 500. The fixing portion 300 may be inserted into an insertion portion of the receiving lens 500 from above and fixed with respect to the receiving lens 500. At this time, in order to facilitate insertion and fixation, a ring-shaped groove (as shown in fig. 4) may be formed at the outer circumference of the fixation part 300.
Therefore, the laser light emitted from the integral lens 400 and the receiving lens 500 may be coaxial. So that a blind area between the emitted laser light and the received laser light can be reduced. Also, according to an embodiment of the present invention, since the optical fiber part 100 can be directly inserted into the fixing part 300 after being inserted into the ferrule 200, the lateral length of the connection and fixing structure of the optical fiber part 100 can be reduced compared to the case where a metal ferrule is formed outside the ferrule 200. Further, since the laser light is emitted from the emitting portion 1000 through the optical fiber portion 100 and then from the integral lens 400, the length of the laser emitting structure in the longitudinal direction in the coaxial laser radar can be reduced.
Also, the laser radar according to an embodiment of the present invention may further include a rotating member (not shown). The rotating member may rotate the emitting part 1000, the receiving part 2000, the optical fiber part 100, the ferrule 200, the fixing part 300, the integral lens 400, and the receiving lens 500. Alternatively, a rotating mirror (not shown) may be disposed above the receiving lens 500 and the integral lens 400, and the laser radar may be rotated by the rotation of the rotating mirror. The rotation may be a 360 ° rotation.
The embodiments described above with respect to the apparatus and method are merely illustrative, where separate units described may or may not be physically separate, and the components shown as units may or may not be physical units, i.e. may be located in one location, or may be distributed over a plurality of network units. Some or all of the modules may be selected according to actual needs to implement the technical solution of the present invention.

Claims (10)

1. A laser emitting structure, comprising:
an emitting section capable of emitting laser light;
an optical fiber section having one end receiving the laser light emitted from the emitting section and causing the laser light to travel along the optical fiber section;
a ferrule inserted into the other end of the optical fiber portion;
a fixing portion having a first opening and a second opening;
an integral lens having an incident portion for allowing laser light to enter and an emitting portion for emitting laser light from the integral lens,
wherein the ferrule is inserted into the first opening of the fixing portion and the integral lens is inserted into the second opening of the fixing portion.
2. The laser emitting structure of claim 1,
the laser light emitted from the emitting section is emitted to the outside through the optical fiber section and the integral lens.
3. The laser emitting structure of claim 1,
the incident portion of the integral lens has a concave lens shape, the exit portion of the integral lens has a convex lens shape,
the integral lens is inserted into the second opening such that the incident portion faces the inside of the second opening and the exit portion faces the outside of the second opening.
4. The laser emitting structure of claim 1,
a through part connecting the first opening and the second opening is formed in a region between the first opening and the second opening of the fixing part,
the laser light enters the integral lens after passing through the through portion from the optical fiber portion.
5. The laser emitting structure of claim 4,
the diameter of the side of the through portion closest to the first opening is smaller than the diameter of the innermost side of the first opening.
6. The laser emitting structure of claim 1,
the outer sidewall of the ferrule is in contact with the inner sidewall of the first opening.
7. The laser emitting structure of claim 1,
the optical fiber portion is formed in a curved shape.
8. The laser emitting structure of claim 1,
the first opening and the second opening communicate with each other inside the fixing portion.
9. A laser emitting structure, comprising:
an emitting section capable of emitting laser light;
an optical fiber unit having one end for receiving the laser light emitted from the emitting unit and causing the laser light to travel along the optical fiber unit;
a ferrule inserted into the other end of the optical fiber portion;
an integral lens having an incident portion for allowing laser light to enter and an exit portion for allowing laser light to exit from the integral lens;
and a fixing part into which the ferrule is inserted at one side and the integral lens is inserted at the other side.
10. A lidar, comprising:
an emitting section capable of emitting laser light;
an optical fiber section having one end receiving the laser light emitted from the emitting section and causing the laser light to travel along the optical fiber section;
a ferrule inserted into the other end of the optical fiber portion;
an integral lens having an incident portion for allowing laser light to enter and an exit portion for allowing laser light to exit from the integral lens;
a fixing portion having a first opening and a second opening, the ferrule being inserted into the first opening of the fixing portion, and the integral lens being inserted into the second opening of the fixing portion, so that laser light is emitted from the optical fiber portion to the outside through the integral lens;
a receiving unit capable of receiving laser light emitted from the emitting unit and reflected outside the laser radar;
a receiving lens for focusing the laser light reflected outside the laser radar after being emitted from the emitting unit to the receiving unit,
wherein the receiving lens is formed with an insertion portion, and the fixing portion is inserted into the insertion portion of the receiving lens.
CN202011574919.3A 2020-12-28 2020-12-28 Laser emission structure and laser radar with same Pending CN114690146A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202011574919.3A CN114690146A (en) 2020-12-28 2020-12-28 Laser emission structure and laser radar with same

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202011574919.3A CN114690146A (en) 2020-12-28 2020-12-28 Laser emission structure and laser radar with same

Publications (1)

Publication Number Publication Date
CN114690146A true CN114690146A (en) 2022-07-01

Family

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Application Number Title Priority Date Filing Date
CN202011574919.3A Pending CN114690146A (en) 2020-12-28 2020-12-28 Laser emission structure and laser radar with same

Country Status (1)

Country Link
CN (1) CN114690146A (en)

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